Required Practical: Investigating the Effect of Concentration on Rate of Reaction (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the main objective of this required practical?
What is the main objective of this required practical?
To investigate effect of concentration
In the gas collection method, what is measured to determine reaction rate?
In the gas collection method, what is measured to determine reaction rate?
Volume of gas produced
What volume of hydrochloric acid is used in the gas collection method?
What volume of hydrochloric acid is used in the gas collection method?
25 cm³
How frequently should gas volume be recorded in the gas collection method?
How frequently should gas volume be recorded in the gas collection method?
Every 10 seconds
How should the magnesium strip be prepared before the reaction?
How should the magnesium strip be prepared before the reaction?
Cleaned using emery paper
What apparatus is used to collect the gas in Method 1?
What apparatus is used to collect the gas in Method 1?
Gas syringe
What should be varied between repeats in both methods?
What should be varied between repeats in both methods?
Concentration of acid
In the disappearing cross method, which reactants are used?
In the disappearing cross method, which reactants are used?
Sodium thiosulfate and HCl
When should the timer be stopped in the disappearing cross method?
When should the timer be stopped in the disappearing cross method?
When cross is no longer visible
What volume of sodium thiosulfate is used in Method 2?
What volume of sodium thiosulfate is used in Method 2?
25 cm³
What should be plotted on a graph during analysis?
What should be plotted on a graph during analysis?
Rate against concentration
What does a steeper gradient on the graph indicate?
What does a steeper gradient on the graph indicate?
Higher rate of reaction